In a fluid, hot material rise as they become less dense, and cool materials sink as the particles condense and become more dense. What term is used to describe this circular motion?
Convection
Why does the speed of the P-wave drop so drastically in this graph at 2800km of depth?
It hits the liquid outer core
Which process forms mid-ocean ridges?
Ocean crust separates and causes mantle material to surface (divergent boundary)
Undersea earthquakes have the potential to cause which natural phenomena?
Tsunami's
What often occurs a long a transform boundary?
Earthquakes
Where would the densest materials go in this tube?
Light purple layer
Mesosaurus is a reptile that has been extinct for nearly 300 million years. Fossil remains of this animal have been found in both South America and Africa.
What explains the location of these fossils on opposite sides of the Atlantic Ocean?
South America and Africa were once connected
Geothermal energy sources that can produce steam are located where bodies of magma are relatively close to Earth’s surface.
At which regions would these steam-producing energy sources occur?
Areas with recent volcanic activity
Earthquakes give off seismic waves that race outward from their epicenter. Which type of seismic waves is the fastest?
P waves, or Primary waves
What forms when one tectonic plate slides beneath another?
Subduction Zone
The Hawaiian islands are an example of a volcanic island chain that has formed far from a tectonic plate boundary. What feature is responsible for their formation?
Hot Spots
In 1968, the Deep Sea Drilling Project began extracting sediment cores from the ocean floor. Analysis of these cores has since shown that the ocean basins are very young compared to the accepted age of the Earth. No rocks older than 180 million years have been found. The cores further indicate that ocean sediments are absent at the mid-ocean ridge and get thicker moving away from the ridge.
This evidence helped to confirm what aspect of the plate tectonic theory?
Sea-floor Spreading
What area represents the location of the youngest rocks on the this map?
The areas colored in red between the Pacific plate and Nazca Plate
Which city on the map is likely to feel the effects of the earthquake first?

Station Z
Name a landform found at a divergent boundary
Mid-Ocean Ridge, Rift Valley
Give 3 landforms that occur at convergent boundaries
Volcanoes, Mountain ranges, ocean trenches
When two tectonic plates slide past one another
Transform boundary
Which location on the continent of Africa would have once corresponded to Location R on South America before the landmass Pangaea broke apart?
Location 3
Which features are found in the same location as many of the volcanoes on this map?
Tectonic Plate Boundaries
The map shows four cities and tectonic plate boundaries found in different parts of the world.
Which city shown is most likely to be effected by an earthquake?

Quito, Ecuador
Name 2 landforms created at a convergent boundary
Ocean Trenches, Mountain ranges, Volcanic Arches
The outermost physical layer of Earth
Lithosphere

The Gabbro plate will subduct under the Granite plate

Image D
What type of boundary occurs where two tectonic plates collide into one another?
Convergent Boundary